HALFLIFE is a crossword puzzle answer that we have spotted 7 times.
- Radioactive decay measure
- *Physics period
- *Radioactive decay measure
- Radioactivity figure
- Decay concept, in physics
- Uranium has one
- About 5700 years, for carbon-14
Last Seen In:
- Netword - September 25, 2015
- LA Times Sunday - October 20, 2013
- New York Times - November 06, 2011
- LA Times - August 02, 2011
- New York Times - October 08, 2009
- New York Times - April 22, 2002
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